[pve-devel] corosync, multicast problem because of vmbr multicast_snooping enabled

Alexandre DERUMIER aderumier at odiso.com
Sat Mar 9 16:53:27 CET 2013


>>Are you sure about that? How can we test that (looking at the sources it seems to be enabled)? 

igmp querier in linux bridge is on disabled in newer kernel since the commit I have pointed, 
but it's enabled by default is current redhat kernel.

With tcpdump on bridge you should see igmp queries comming from the bridge. 



----- Mail original ----- 

De: "Dietmar Maurer" <dietmar at proxmox.com> 
À: "Michael Rasmussen" <mir at datanom.net>, pve-devel at pve.proxmox.com 
Envoyé: Samedi 9 Mars 2013 16:44:43 
Objet: Re: [pve-devel] corosync, multicast problem because of vmbr multicast_snooping enabled 

> From what I have read about the IGMP implementation in Linux then igmp 
> quierier is optional and disabled by default since the task of acting as quierier is 
> normally an infrastructure task in which case you expect the network 
> components like switch or router to take care of this. This is especially the case 
> if the nearest switch is a stacked switch in a larger network where you would 
> expect the IGMP snooping to be carried over the trunk port. 

Are you sure about that? How can we test that (looking at the sources it seems to be enabled)? 

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